I have always been of the belief that its best to be taking vitamins with food as your body will utilize them better and there is a better absorption rate. This is especially the case for fat-soluble vitamins..

So, its my opinion that supplementing with vitamins on an empty stomach is probably the most wasteful way to consume your supplements.

I asked a similar question here a while back. One thought I had weeks after posting the question was that some vitamins are fat soluble and some are water soluble. The vitamin C example above would work as it is water soluble whereas taking vitamin A (or D, E or K) while fasting might be less optimal (this isn't a statement so much as a thought or a question for the group). While fat soluble vitamins require fats in the intestines to be digested, I am not clear if the fat should be or must be ingested with the vitamins or if the blood stream can provide previously digested fats. Anyone know?

Kevin

Human beings, by changing the inner attitudes of their minds, can change the outer aspects of their lives.William James